package com.leo;

import javafx.application.Application;
import javafx.beans.InvalidationListener;
import javafx.beans.Observable;
import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.ListView;
import javafx.scene.layout.AnchorPane;
import javafx.stage.Stage;

/**
 * @ClassName ListViewDemo
 * @Description 五种数据类型得增删改
 * @Author wangss
 * @date 2020.06.09 11:04
 * @Version 1.0
 */
public class ListViewDemo2 extends Application {

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        AnchorPane an = new AnchorPane();
        an.setStyle("-fx-background-color: #e7eeea");
        Scene scene = new Scene(an);

        ObservableList<String> list = FXCollections.observableArrayList();
        list.add("wangss - 18");
        list.add("ztt - 16");
        list.add("xyy - 14");
        list.add("xyy1 - 14");

        ListView<String> listView = new ListView<>();
        listView.setPlaceholder(new Label("没有数据"));
        listView.setPrefWidth(300d);
        listView.setPrefWidth(300d);

        listView.setItems(list);

        Button button = new Button("button");

        an.getChildren().addAll(button, listView);

        AnchorPane.setTopAnchor(listView, 50d);
        AnchorPane.setLeftAnchor(listView, 100d);

        primaryStage.setScene(scene);
        primaryStage.setTitle("ListView");
        primaryStage.setWidth(600d);
        primaryStage.setHeight(600d);
        primaryStage.setResizable(false);
        primaryStage.show();

        button.setOnAction(event -> {
            list.add("123");
        });

        list.addListener(new InvalidationListener() {
            @Override
            public void invalidated(Observable observable) {
                ObservableList<String> data = (ObservableList<String>) observable;
//                data.forEach(System.out::println);
            }
        });

        list.addListener(new ListChangeListener<String>() {
            @Override
            public void onChanged(Change<? extends String> c) {
                while (c.next()) {
                    if (c.wasAdded()) {
                        System.out.println("添加操作");
                    } else if (c.wasUpdated()) {
                        System.out.println("更新操作");
                    } else if (c.wasRemoved()) {
                        System.out.println("移除操作");
                    }
                }
            }
        });
    }
}
